Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Plumbing
Sump Pump Sizing Calculator
Determine the minimum sump pump capacity (GPH) needed to protect your basement given its area, local peak rainfall, soil drainage, and discharge lift height. Use it before purchasing a pump or when upgrading an undersized unit.
Fill in the required fields to see your result.
Plumbing
Water Pump Sizing Calculator
Calculate the required pump power output in horsepower given flow demand, total dynamic head, and pump efficiency. Use when selecting or specifying a water pump for irrigation, building supply, or industrial process systems.
Fill in the required fields to see your result.
Key differences
| Sump Pump Sizing Calculator | Water Pump Sizing Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 4 | 3 |
| Result | Required Pump Capacity (GPM) | Required Motor Power (HP) |
| What it does | Determine the minimum sump pump capacity (GPH) needed to protect your basement given its area, local peak rainfall, soil drainage, and discharge lift height. Use it before purchasing a pump or when upgrading an undersized unit. | Calculate the required pump power output in horsepower given flow demand, total dynamic head, and pump efficiency. Use when selecting or specifying a water pump for irrigation, building supply, or industrial process systems. |